import copy
dictionary = {'卷心菜':'cabbage','午餐':['lunch','nooning']}
dictionary1 =  dictionary
dictionary2 = dictionary.copy()
dictionary3 = copy.deepcopy(dictionary)
dictionary ['卷心菜'] = 'dictionary'
dictionary ['午餐'].remove ('nooning')
print('dictionary1 = ', dictionary1)
print('dictionary2 = ', dictionary2)
print('dictionary3 = ', dictionary3)

dictionary = {
    '卷心菜' : 'cabbage',
    '午餐' : 'lunch',
    '机器人' : 'robot',
    '天空' : 'sky',
    '花' : 'flower'
}
print('中英文字典中所有中文词组及其对应的英文单词:')
for item in dictionary.items():
    print(item)
print('中英文字典中所有中文词组')
for chinese in dictionary.keys():
    print(chinese, end='')
print('\n中英文字典中所有英文单词:')
for english in dictionary.values():
    print(english, end='')